/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                 Eclipse Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                A copy of the License is available at                 *
*          http://www.eclipse.org/org/documents/epl-v10.html           *
*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#pragma prototyped
/*
 * format decimal integer
 * David Korn
 * AT&T Research
 */

#include	<ast.h>

static const char table[]=
{
	"000001002003004005006007008009010011012013014015016017018019"
	"020021022023024025026027028029030031032033034035036037038039"
	"040041042043044045046047048049050051052053054055056057058059"
	"060061062063064065066067068069070071072073074075076077078079"
	"080081082083084085086087088089090091092093094095096097098099"
	"100101102103104105106107108109110111112113114115116117118119"
	"120121122123124125126127128129130131132133134135136137138139"
	"140141142143144145146147148149150151152153154155156157158159"
	"160161162163164165166167168169170171172173174175176177178179"
	"180181182183184185186187188189190191192193194195196197198199"
	"200201202203204205206207208209210211212213214215216217218219"
	"220221222223224225226227228229230231232233234235236237238239"
	"240241242243244245246247248249250251252253254255256257258259"
	"260261262263264265266267268269270271272273274275276277278279"
	"280281282283284285286287288289290291292293294295296297298299"
	"300301302303304305306307308309310311312313314315316317318319"
	"320321322323324325326327328329330331332333334335336337338339"
	"340341342343344345346347348349350351352353354355356357358359"
	"360361362363364365366367368369370371372373374375376377378379"
	"380381382383384385386387388389390391392393394395396397398399"
	"400401402403404405406407408409410411412413414415416417418419"
	"420421422423424425426427428429430431432433434435436437438439"
	"440441442443444445446447448449450451452453454455456457458459"
	"460461462463464465466467468469470471472473474475476477478479"
	"480481482483484485486487488489490491492493494495496497498499"
	"500501502503504505506507508509510511512513514515516517518519"
	"520521522523524525526527528529530531532533534535536537538539"
	"540541542543544545546547548549550551552553554555556557558559"
	"560561562563564565566567568569570571572573574575576577578579"
	"580581582583584585586587588589590591592593594595596597598599"
	"600601602603604605606607608609610611612613614615616617618619"
	"620621622623624625626627628629630631632633634635636637638639"
	"640641642643644645646647648649650651652653654655656657658659"
	"660661662663664665666667668669670671672673674675676677678679"
	"680681682683684685686687688689690691692693694695696697698699"
	"700701702703704705706707708709710711712713714715716717718719"
	"720721722723724725726727728729730731732733734735736737738739"
	"740741742743744745746747748749750751752753754755756757758759"
	"760761762763764765766767768769770771772773774775776777778779"
	"780781782783784785786787788789790791792793794795796797798799"
	"800801802803804805806807808809810811812813814815816817818819"
	"820821822823824825826827828829830831832833834835836837838839"
	"840841842843844845846847848849850851852853854855856857858859"
	"860861862863864865866867868869870871872873874875876877878879"
	"880881882883884885886887888889890891892893894895896897898899"
	"900901902903904905906907908909910911912913914915916917918919"
	"920921922923924925926927928929930931932933934935936937938939"
	"940941942943944945946947948949950951952953954955956957958959"
	"960961962963964965966967968969970971972973974975976977978979"
	"980981982983984985986987988989990991992993994995996997998999"
};

char*
fmtint(intmax_t ll, int unsign)
{
	char		*buff;
	uintmax_t	n,m;
	int		j=0,k=3*sizeof(ll);
	if(unsign || ll>=0)
		n = ll;
	else
	{
		n = -ll;
		j = 1;
	}
	if(n<10)
	{
		buff = fmtbuf(k=3);
		buff[--k] = 0;
		buff[--k] = '0' + n;
		goto skip;
	}
	buff = fmtbuf(k);
	buff[--k] = 0;
	do
	{
		k -= 3;
		if((m=n) >= 1000)
			m = n%1000;
		memcpy(buff+k,table+3*m,3);
		n /= 1000;
	}
	while(n>0);
	while(buff[k]=='0')
		k++;
skip:
	if(j)
		buff[--k] = '-';
	return(&buff[k]);
}
